Though Einstein is most known for his theory of relativity, what brought him to fame first was his explanation of the photo-electric effect, proving that light was both particle and wave.
Einstein consciously applied creative skills to the problem by performing “thought experiments” in his head while doing his day job as a clerk. Through the process of vividly imagining what happened to light and why (imagining himself at the head of a light-beam and how it felt), he explained a phenomenon that every other physicist in the scientific community actively avoided as impossible to resolve.
His work method:
“Although I have a regular work schedule, I take time to go for long walks on the beach so that I can listen to what is going on inside my head.
“If my work isn’t going well, I lie down in the middle of a workday and gaze at the ceiling while I listen and visualise what goes on in my imagination.”
Got that. Work schedule. Walk somewhere lovely. Lie down and visualise.